Milling machine



FIG. 1 is a perspective view of a milling machine, showing my new design.

FIG. 2 is a front view thereof.

FIG. 3 is a rear view thereof.

FIG. 4 is a left side view thereof.

FIG. 5 is a right side view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the drawings depict portions of the milling machine which form no part of the claimed design. 

CLAIM The ornamental design for a milling machine, as shown and described. 